Seagate External Harddisk (ST903204EXM101-RK)SpecificationsModel Number : ST903204EXM101-RKInterface : USB 2.0Capacity : 320GB--------------------------------------------------------------------------------------PhysicalHeight : 17.6mm (0.69 in)Width : 80.01mm (3.15 in)Length : 141.29mm (5.56 in)Weight (typical) : 160g (.35 lb)Shipping Weight : .36kg (0.794 lb)--------------------------------------------------------------------------------------PerformanceSpin Speed (RPM) : 5400 RPMWarranty :3 Years